20216112 has 40 divisors (see below), whose sum is σ = 59686656. Its totient is φ = 5775936.

The previous prime is 20216099. The next prime is 20216137. The reversal of 20216112 is 21161202.

It is a junction number, because it is equal to n+sod(n) for n = 20216091 and 20216100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29748 + ... + 30419.

Almost surely, 2^20216112 is an apocalyptic number.

It is an amenable number.

20216112 is an abundant number, since it is smaller than the sum of its proper divisors (39470544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20216112 is a wasteful number, since it uses less digits than its factorization.

20216112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60185 (or 60179 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 20216112 is about 4496.2330900433. The cubic root of 20216112 is about 272.4159581475.

Adding to 20216112 its reverse (21161202), we get a palindrome (41377314).

The spelling of 20216112 in words is "twenty million, two hundred sixteen thousand, one hundred twelve".